The 00414940 is a genuine OEM Bosch Tube Sleeve. The Bosch 00414940 fits over the injector body and seals the injector to the fuel rail. The Tube Sleeve helps to prevent fuel leakage and also helps to reduce noise from the injector. It is recommended to either refer to your appliance service manual, contact your appliance manufacturer, or contact a service professional to validate the needed part number for your appliance prior to purchasing. The Bosch 00414940 Tube Sleeve fits the following brands of ranges: Bosch, Thermador The 00414940 replaces: 414940, 08-04-393-02 The 00414940 is a 5/16 inch Tube.